The United States Navy (USN) is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined.[4] The U.S. Navy also has the world's largest carrier fleet, with 11 in service, one under construction (two planned), and one in reserve. The service had 328,516 personnel on active duty and 101,689 in the Navy Reserve in January 2011. It operates 286 ships in active service and more than 3,700 aircraft
The mission of the Navy is to maintain, train and equip combat-ready Naval forces capable of winning wars, deterring aggression and maintaining freedom of the seas
List of ships in US Navy are
Aircraft carriers:
- Enterprise class (1 in commission)
- Nimitz class (10 in commission)
- Gerald R. Ford class (1 under construction, at least 2 more planned)
Amphibious warfare vessels:
- Tarawa class (1 in commission, 4 decommissioned)
- Wasp class (8 in commission)
- America class (1 under construction, at least 3 more planned)
- Austin class (4 in commission, 8 decommissioned)
- San Antonio class (5 in commission, 4 under construction, 1 more planned)
- Whidbey Island class (8 in commission)
- Harpers Ferry class (4 in commission)
Surface vessels:
- Ticonderoga class (22 in commission, 5 decommissioned)
- Arleigh Burke class (59 in commission, three under construction, at least three more planned)
- Oliver Hazard Perry class (19 in commission, 9 in active reserve, 23 decommissioned)
Submarines:
- Ohio class ballistic missile submarines (18 in commission, with 4 converted into guided missile submarines)
- Los Angeles class attack submarines (43 in commission, 2 in reserve, 17 decommissioned)
- Seawolf class attack submarines (3 in commission)
- Virginia class attack submarines (7 in commission, 3 under construction, 4 ordered, at least 4 more planned)
